Theresa Calvert, a physician at the Horizon Family Medicine in New Jersey, has been a member of the hospital’s internal medicine and sports medicine staff since 2009.

The hospital’s medical team has been credited with helping to improve the health of some of the state’s most vulnerable patients.

But in the last year, she says she has witnessed a drastic shift in her health care, and she fears that a lack of accountability and transparency has contributed to a culture of “reputation management.”

“There is no accountability,” she said.

“We have been told that we can only be a part of a ‘good doctor’ if we keep our job, if we maintain our salary, if and when we’re retired, and if we’re on sick leave.”

In a letter to employees last month, Horizon said that Calvert’s tenure as a member “was impacted by the need to protect and improve the internal medicine team’s performance.

This resulted in a reduction in our staffing levels and the reduction of our physician team.”

In the letter, Horizon wrote that Calverts “continues to demonstrate the need for her leadership skills and the respect she has earned as a physician.”

“We appreciate that she was able to balance her medical duties with her work, which she did with excellence,” Horizon wrote.

“She has a proven track record of providing quality, compassionate care to her patients.”

Calvert said she has been given no explanation for why she has not been able to secure additional employment.

“There’s no explanation,” she told ABC News.

“It’s just a question of what is happening.” 

Horizon Health spokesman James Clark said that the company had not been made aware of any disciplinary action.

“I can tell you this: Horizon does not tolerate misconduct, including violations of our professional standards and the rules of the organization,” Clark said.

Calvert and her husband, Tom, who also works at Horizon, did not respond to requests for comment. 

Horizon, which is located in Newark, has a long history of promoting itself as an innovative, high-performing healthcare system.

In 2012, it was named one of the “Best Hospitals in America” by The New York Times, and in 2017, it ranked third in New York’s annual report card. 

But the company has had a history of questionable hiring practices.

The Times found that Horizon’s internal health team routinely promoted or promoted employees from other positions to lead teams, even when they had never worked on a case.

In 2015, a series of internal emails and documents revealed that Horizon doctors were not required to complete an independent background check, as required by the Affordable Care Act, or undergo physical examinations as required under state law. 

In 2016, a confidential internal document described in the Times report said that Horizon hospitals were “systematically failing to meet national standards for physician safety and quality.” 

The paper also found that employees were encouraged to “over-schedule” and “re-scheme” patient care in an effort to meet patient needs. 

“Horizon’s failure to meet the highest medical standards, including requiring its doctors to complete the HIPAA compliance training, is a reflection of the company’s lack of commitment to the medical profession,” the report said.

Horizon did not immediately respond to a request for comment from ABC News about the report. 

In a statement to ABC News, Horizon Health said that it “has a long and proud history of delivering innovative, quality health care to patients in our community.

We are committed to upholding our commitment to a robust medical team, as well as to providing a safe environment for patients, caregivers, and staff.”